<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="button" value="获取一条笑话" @click="getJoke">
        <p>{{joke}}</p>
    </div>
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
        // https://autumnfish.cn/api/joke
        var app = new Vue({
            el:'#app',
            data:{
                joke:'很好笑的笑话'
            },
            methods:{
                getJoke(){
                    // axios中 this 改变了，所以需要提前保存this
                    var that = this
                    axios.get('https://autumnfish.cn/api/joke').then(
                        function(response){
                            that.joke = response.data
                        },function(err){

                        }
                    )
                }
            }
        })

         
    </script>
</body>
</html>